microsoft sql server 2005 express edition service pack 2 install failure

[seth69]

when i try to install the service pack 2 through windows update it shows a error saying "Hotfix installer has stopped working. A problem cause the program to stop working correctly. Windows will close the program and notify you if a solution is available"

On the windows update it says:
Failed: 1 update
Error(s) found:
Code FF

please help me

[unidentified]

see this : http://support.microsoft.com/kb/885627/